Analysis Overview
SHA256
c73cb93ad9ad6d003b505ce2b960d75467ad612786e0559c74dca18426fb9400
Threat Level: Known bad
The file baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe was found to be: Known bad.
Malicious Activity Summary
Djvu family
Detected Djvu ransomware
Djvu Ransomware
Checks computer location settings
Modifies file permissions
Looks up external IP address via web service
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-26 00:35
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Djvu family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-26 00:35
Reported
2024-01-26 00:38
Platform
win7-20231215-en
Max time kernel
142s
Max time network
146s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Djvu Ransomware
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e91b4fd8-90ab-4a03-8c18-bf9ed6092053\\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe
"C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e91b4fd8-90ab-4a03-8c18-bf9ed6092053" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe
"C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | colisumy.com | udp |
| US | 8.8.8.8:53 | zexeq.com | udp |
| US | 199.59.242.150:80 | zexeq.com | tcp |
Files
C:\Users\Admin\AppData\Local\e91b4fd8-90ab-4a03-8c18-bf9ed6092053\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe
| MD5 | 5cacd6f1b5cec25f3f0b0b3c4d5807d3 |
| SHA1 | 41b8851bc57462502b0113ee1f2579dff5d94f4f |
| SHA256 | c73cb93ad9ad6d003b505ce2b960d75467ad612786e0559c74dca18426fb9400 |
| SHA512 | 7d46037825e5f34f02105c45ee05e03e4c2d7e73889a43c4e47704e27e563cae63f5d0dffb01a2d628ad0b3962e31cebf44dbed5892b6e1a995c45ee2c0714b4 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 9092075ae624bc27db0e5c3ae2400451 |
| SHA1 | b013b30c0c58362273f070e340121b8aa743d438 |
| SHA256 | 8079111a395ce837aa7ca8847e3136c9d69b382dedd5bb8b15c42feec9ad6c80 |
| SHA512 | a3526f04d69879686f1f1e51e6eebd0d0c691c89f007d111247d564f75a175bd491ba090965fa11ceda65f3cfac4d4efc8f5931f5fc658ffdcb42a636c4bfd03 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 8daed5fecd6b7116eb16ea66eda552e0 |
| SHA1 | bb2149a2541f11dc4da8df7f4579dd65c341ce8b |
| SHA256 | 076f87f4acbece273de34b83b72bb1a4cf38135f1cf27c49722ce8dfe5c60d71 |
| SHA512 | eeb7e9bea6db27a316e09dd4cdaae0ccbb3d895e56dad92f54e59a6bb13e450fb6bfb09972f7a23aadba82960af004a7b72852d477b14b80d9d5a68dd6859fc7 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | c5b8fff9183e0c3f560a43a0ec147841 |
| SHA1 | 8cf7a72f8e7242823a932e29749f4b011193f092 |
| SHA256 | 05fb64a509c823988adb43ef3248b46a7b5a8a59e3efc339aeffab444bec2b63 |
| SHA512 | 397065559c23e61227362168e4ceafbe1d1ca0e12f13bb77a4b9dccf208735669a30e2ec17d97c7796da49adc69f3e03d5bbb5c3a6a508487e4421219e666100 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
| MD5 | 57d77b8cc0c8c921813007bcf36f4962 |
| SHA1 | 3da90ee146114e0259244e62e9d241ad4dcc8e2c |
| SHA256 | 45ac0cafa869f8c36ce3ee96f4c5611f082e13517b81ee040bd88fd813243f00 |
| SHA512 | a1b7adbf73ce59c8f0cc60bd2672f916d604a9a2021b678451f9a6931653c2c44cbd138155a77c63bb19bcd9b467186c30f9dfe1ecdd43f472d42440c6d3b89c |
C:\Users\Admin\AppData\Local\Temp\Cab92ED.tmp
| MD5 | ac05d27423a85adc1622c714f2cb6184 |
| SHA1 | b0fe2b1abddb97837ea0195be70ab2ff14d43198 |
| SHA256 | c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d |
| SHA512 | 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d |
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-26 00:35
Reported
2024-01-26 00:38
Platform
win10v2004-20231215-en
Max time kernel
143s
Max time network
153s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\24ae5b7d-ba21-43b4-8dff-a80b1b4fc05b\\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe
"C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\24ae5b7d-ba21-43b4-8dff-a80b1b4fc05b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe
"C:\Users\Admin\AppData\Local\Temp\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.201.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | colisumy.com | udp |
| US | 8.8.8.8:53 | zexeq.com | udp |
| US | 199.59.242.150:80 | zexeq.com | tcp |
| US | 199.59.242.150:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 150.242.59.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.171.91.138.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.201.50.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\24ae5b7d-ba21-43b4-8dff-a80b1b4fc05b\baaf76a5d567125252c32a834369f3658341d8224c4a058275c6760c43d7545b_payload.exe
| MD5 | 5cacd6f1b5cec25f3f0b0b3c4d5807d3 |
| SHA1 | 41b8851bc57462502b0113ee1f2579dff5d94f4f |
| SHA256 | c73cb93ad9ad6d003b505ce2b960d75467ad612786e0559c74dca18426fb9400 |
| SHA512 | 7d46037825e5f34f02105c45ee05e03e4c2d7e73889a43c4e47704e27e563cae63f5d0dffb01a2d628ad0b3962e31cebf44dbed5892b6e1a995c45ee2c0714b4 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | ddd9e87b68af2f76a84295a77341a423 |
| SHA1 | fdcc86aa063ebb376505b3a5ff69bd47c3685de2 |
| SHA256 | 9ba20cbfb1097966b239dcc5a539fa7fe0254ca02c3fb29302ca3ecba8bcbd19 |
| SHA512 | bae9f225eb2a0d4a7c1bd42520518975a3632499501d1bdf94f76e5aa94b5fc1850f7fdadb332b6d6b0d2cb62404ac24f1afbb8a83319cdd40cb966a9ce85699 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 8daed5fecd6b7116eb16ea66eda552e0 |
| SHA1 | bb2149a2541f11dc4da8df7f4579dd65c341ce8b |
| SHA256 | 076f87f4acbece273de34b83b72bb1a4cf38135f1cf27c49722ce8dfe5c60d71 |
| SHA512 | eeb7e9bea6db27a316e09dd4cdaae0ccbb3d895e56dad92f54e59a6bb13e450fb6bfb09972f7a23aadba82960af004a7b72852d477b14b80d9d5a68dd6859fc7 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | cbdd878e6795bb24ecc35bb4306f966f |
| SHA1 | 80fdc3e3de09874e75920bdb0e7c0f8bbacbf27a |
| SHA256 | 16251b27b3cf83e500304e0b51d7a353476e97091835f1c940b19fca43002f26 |
| SHA512 | 343cbab2389b59e302d1f4f119c2dda1053f89325584f08c7218dfce95ef0cb7fb1a53d23e173e47deb50c93031d93a70dc6d2366e8fc1dc3fe970cf4f4f4bf0 |
C:\Users\Admin\AppData\Local\6ad8e551-a59b-493a-9787-a85ec8081045\build3.exe
| MD5 | e100eec7772bd5d2fd825556d6646358 |
| SHA1 | fa4394a522c402d37c6fe411b7fb710d7922f838 |
| SHA256 | 57b3b52d59d18fa282b3835a9ac6206308007f7dfac472dbe26b78c8e52244e5 |
| SHA512 | 63b5c0d6fc54fac45be27b690bd33ae3c5e3b7d31c2fac1df6f2ebd3f4a4303f76f4c01a19c0ddba0bd55e7745b01c0a913d49542257a6515705a0d2fe49cfee |